From a sprint through the terminal to a long wait on a remote airstrip, the Thunderhead HD Duffel is made for the parts of a trip that don’t follow a standard itinerary. Carry it on your back when the pavement ends, grab the rope handles when it’s time to load a boat, or secure the backpack straps together for a quick carry through the airport. A fully submersible main compartment and molded bottom keep critical gear dry as the bag gets hauled through forest, tundra, jungle, or a far-off atoll. Wherever the next pickup is, you’ll know your gear inside is ready.